bittorrent-client/tempCodeRunnerFile.c at main · loki533/bittorrent-client · GitHub

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#include <stdio.h>
#include <stdlib.h>
#include <string.h>

char* decode_string(const char *data, int *pos)
{
    int len = 0;

    while(data[*pos] != ':')
    {
        len = len * 10 + (data[*pos] - '0');
        (*pos)++;
    }

    (*pos)++; // skip ':'

    char *result = malloc(len + 1);

    strncpy(result, data + *pos, len);

    result[len] = '\0';

    (*pos) += len;

    return result;
}

int main()
{
    char *test = "4:help";

    int pos = 0;

    char *result1 = decode_string(test, &pos);

    printf("%s\n", result1);

    free(result1);

    return 0;
}